/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.facet;

import org.jetbrains.annotations.NotNull;

import java.util.EventListener;

/**
 * Implement this interface and register the implementation in {@link ProjectWideFacetListenersRegistry} to be notified about changes in facets
 * in all modules.
 * <p>
 * Consider using {@link ProjectFacetListener} instead, it doesn't require calling code during project initialization.
 * </p>
 */
public interface ProjectWideFacetListener<F extends Facet> extends EventListener {

  void firstFacetAdded();

  void facetAdded(@NotNull F facet);

  void beforeFacetRemoved(@NotNull F facet);

  void facetRemoved(@NotNull F facet);

  void allFacetsRemoved();

  void facetConfigurationChanged(@NotNull F facet);
}
